Remove semicolon character and spaces from last email from recipients list

Question

Remove semicolon character and spaces from last email from recipients list

Hello, I want to send my emails as below:

[email protected];[email protected];

But it is giving me sending error, since it is taking the semicolon of the last address, when I put the emails in this way [email protected];[email protected] without the ; I can send normally, but if the user enters the ; I need to do a treatment for it, which is what I am not getting.

I will leave the code snippet below, than I have already tried to do, thank you.

mail.From = new MailAddress(email);
//EmailIsValid(destinatario);
//mail.To.Add(destinatario);
string[] multiplesSend = destinatario.Split(';');
foreach (var emails in multiplesSend)
{
     string expression = "^[A-Za-z0-9\\._%-]+@[A-Za-z0-9\\.-]+\\.[A-Za-z]{2,4}(?:[;][A-Za-z0-9\\._%-]+@[A-Za-z0-9\\.-]+\\.[A-Za-z]{2,4}?)*";
     if (Regex.IsMatch(destinatario, expression))
           mail.To.Add(emails);
     }
}

0

c#webforms

Author: novic, 2020-01-07

Source

1 answers

score 3 · Accepted Answer

I think the problem in these cases is that Split creates an empty field in array, since you have a ; at the end of the string.

To solve this you can add an argument to Split to remove the strings that are empty in the list

string[] multiplesSend = destinatario.Split(new char[] { ';' }, 
    StringSplitOptions.RemoveEmptyEntries);

Or check if the email is empty before adding

if (!string.IsNullOrEmpty(emails) && Regex.IsMatch(destinatario, expression))
    mail.To.Add(emails);